ModsFinder

QuirkOptimizations

by JustQuirk

QuirkOptimizations is a client-side Fabric performance mod with toggles for startup, resource reloads, particles and UI latency, set in an in-game screen opened with the O key.

FabricClient-side onlyCreative Commons Attribution Non Commercial No Derivatives 4.01.19.2 – 1.21.11

What it does

Settings cover Fast Startup, Fast Resource Reload, reduced particles, low latency UI behavior and an entity shadow toggle. An Aggressive mode applies stronger performance-oriented adjustments on top of these. Each toggle is switched on or off in the screen, and the choices are saved automatically between sessions, so nothing needs to be edited by hand.

The mod is aimed at players who want more responsiveness without a complicated setup. It runs only on the client, so a server does not need it and players can keep their own preferences. Files are published for Fabric alone, for 1.19.2, 1.20.1, 1.20.4, 1.20.6, 1.21.3, 1.21.4 and 1.21.11, with 1.0.0+1.21.11 for 1.21.11 as the latest file. The code is licensed under Creative Commons Attribution Non Commercial No Derivatives 4.0, which is not an open source license.

The mod is in the Optimization category and also listed under Game mechanics. Builds cover 1.19.2 – 1.21.11, and first release dates from 2026-07-17, with the latest update on 2026-09-26.

Key features

  1. Fast Startup toggle

    A switch that shortens game startup, so the title screen appears sooner after launching.

  2. Fast resource reload

    Reloading resource packs, including texture packs, is handled more quickly when this option is on.

  3. Reduced particles

    Particle effects can be cut back to lower the load during busy scenes.

  4. Low latency UI and shadows

    Interface input responds with less delay, and entity shadows can be turned off separately.

Compatibility

Latest build for each game version and loader.

1.21.111.0.0+1.21.11
1.21.41.21.4
1.21.31.21.3
1.20.61.20.6
1.20.41.20.4
1.20.11.20.1
1.19.21.19.2
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Who it’s for: Players on Fabric who want simple in-game optimization toggles rather than editing configuration files. Server owners have no installation step for this mod.

Questions

Does QuirkOptimizations need to be installed on the server?

No. It is installed on the player's side alone, so servers need nothing.

Which loader does QuirkOptimizations support?

Fabric is the only loader listed for the mod. Files exist for 1.19.2, 1.20.1, 1.20.4, 1.20.6, 1.21.3, 1.21.4 and 1.21.11.

How are the settings changed?

The settings screen opens with the O key in game. Each toggle is saved automatically, so choices remain after the game restarts.

In the catalog

QuirkOptimizations is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Optimization mods3,545Fabric modsMods for 1.21.1119,862

More from JustQuirk

All projects
BDM: Blind, Deaf, Mute1.21.11

Similar mods

Sodium1.16.3 – 26.3Iris Shaders1.16.5 – 26.3Entity Cullingb1.7.3 – 26.3FerriteCore1.16.5 – 26.3ImmediatelyFast1.18.2 – 26.3Sodium Extra1.16.2 – 26.3

What the author says

QuirkOpts (QuirkOptimizations) is a Fabric client-side performance mod for Minecraft 1.21.4 designed to make the game feel faster overall. Known Issue: Clicking on the credits text crashes your game due to a bug
JustQuirk, on the Modrinth page

Official listing

Owner
JustQuirk
Published
2026-07-17
Updated on Modrinth
2026-09-26
Facts verified
2026-10-15

Tags

Game mechanicsOptimization
Open on ModrinthCompare